InChI=1/C15H20N2O4S/c1-21-15(18)13-9-12(22(16,19)20)7-8-14(13)17-10-11-5-3-2-4-6-11/h2-3,7-9,11,17H,4-6,10H2,1H3,(H2,16,19,20)/t11-/m1/s1/f/h16H2 E08262E76E1426A6